6403.91.30.40 - Other

This HTS classification, 6403.91.30.40, covers "Other" footwear with outer soles of rubber, plastics, leather, or composition leather, and uppers of leather, specifically those that cover the ankle and are not of a welt construction. This category is a residual one, encompassing a broad range of men's leather footwear that meets the general criteria of covering the ankle but does not fit into more specific subheadings within Chapter 64.

To distinguish this classification from its sibling, 6403.91.30.35, it is important to note that the sibling specifically applies to men's footwear with pigskin uppers. Therefore, classification under 6403.91.30.40 is appropriate for men's ankle-covering leather footwear where the upper material is *not* pigskin, provided it also does not meet the criteria for welt footwear. The core differentiator lies in the specific upper material of pigskin for the sibling.

As this HTS code represents a leaf node within the tariff schedule, there are no further subcategories for this specific classification. Classification into this category is the final determination for eligible goods. Therefore, for practical classification purposes, importers and exporters should ensure that the footwear meets all preceding criteria: being footwear with outer soles of rubber, plastics, leather, or composition leather, having uppers of leather, covering the ankle, being for men, and not being of welt construction, while specifically excluding footwear with pigskin uppers.